Home / 259,848,009.60-389,772,014.40-78,095,187.60

Finding the Fourth Proportional to 259,848,009.60, 389,772,014.40 and 78,095,187.60

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Solution

The fourth proportional to 259,848,009.60, 389,772,014.40 and 78,095,187.60 is: 117,142,781.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,848,009.60 : 389,772,014.40 = 78,095,187.60 : x
  2. Step 2: Convert to fraction form
    259,848,009.60/389,772,014.40 = 78,095,187.60/x
  3. Step 3: Cross multiply
    259,848,009.60x = 389,772,014.40 × 78,095,187.60
  4. Step 4: Simplify right side
    259,848,009.60x = 30,439,318,585,797,896
  5. Step 5: Solve for x
    x = 30,439,318,585,797,896/259,848,009.60
  6. Step 6: Final answer
    x = 117,142,781.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.